TOA Corporation (TOA株式会社, Tī Ō Ē Kabushiki-gaisha) is a Japanese electronics company, specializing in public address systems, intercom systems, microphones, array speakers and megaphones.

[3] The company's products are used in a variety of settings, among them Brompton Oratory, a large neo-classical Roman Catholic church in Knightsbridge, London.

[4] The company was founded in 1934 by Tsunetaro Nakatani as the TOA Electric Manufacturing Company.

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